hi all, just got unifi the other day. all was good, every device could connect until 2 days ago when my laptop lost the wifi connection and couldn't detect the network.

other devices (bb/iphone/other laptop) can detect and connect to the network.

so simple deduction that its my laptop wifi kaput right --- WRONG! my laptop can detect and connect to other networks (neighbours/starbucks/office) --- just this UNIFI router that it can't even detect let alone connect

have deleted and reinstalled the network card in my laptop and played around w/ router settings but no go.

friend said probably network card koyak --- where it cannot detect certain kind of signal --- sending back to dell.

I'm not sure if this is the case but a while back i had the same problem. turns out XP doesn't support WPA-2 as security. IF your laptop is an XP, try changing the encryption for your wifi to WPA only. Good luck

Edit: I mean to say some wireless card. not windows XP itself. sorry about that. From my experience, older wireless card can't detect WPA2, in some cases they can, but can't connect.

You first try to access to the internet with wire.If you can connect to the internet then find some driver updater like DriverGenius or something like that.It will find the suitable drivers and install for you!

Just wanna confirm right, after changing to this setting ( change to 20mhz )will it affect the connection for other devices like the newer laptops?One more thing, what's the difference between 20mhz and 40mhz, i mean how does it affect the performance?

I also face the same problem. Everything was working well before Sunday. All my devices can be connected to my unifi router. All of a sudden, my HTC Desire HD, iPad and Acer laptops cannot detect the wifi anymore. My neighbour's unifi can be detected. My brother's iPhone 3G and 3GS, Asus laptops can connect to my wifi. Strange but true. I have changed the settings to 20mhz and also wireless b/g/n. Still the same outcome. Please help.

Alright, What I did is disable the "Wi-Fi Protected Setup (Also called WCN 2.0 in Windows Vista)" area. Go and access SETUP>>WIRELESS SETUP>>Manual Wireless Connection Setup. Then untick the WCN. (Untick the "Enable").

With this, I do not need to change to 20MHz and still using b/g/n and still using WPA2. Heh heh

Same problem, all devices can detect my wifi except my sister's laptop. Tried all the suggestions given, but the problem still persists. However my sister's laptop can see neighbour's wifi, and before this, my sister's laptop can detect my wifi. The problem started yesterday. Any other solutions?

I'm facing the same problem too! I think it has something to do with the OS. I have two laptops, one running on Windows 7 64-bit and the other one on Windows 8 64-bit. They often could not detect my Wf-fi signal. However my other PC running on Windows 7 32-bit has never encountered this problem. I have used the method suggested by fellow forum member WebWalker. It resolves the problem, but not every time.

QUOTE(WebWalker @ Mar 3 2011, 05:04 PM)

Try to delete the Wireless profile for Unifi connection in Windows.

Restart pc/notebook and see whether it can detect the Unifi WIFI signal.

Sometimes when the above method fails, I have to turn off the laptops, then turn off the wi-fi router, turn the wi-fi router on again. Then only I turn on my laptops and see if they could detect my wi-fi network. It works most of the time.

I'm facing the same problem too! I think it has something to do with the OS. I have two laptops, one running on Windows 7 64-bit and the other one on Windows 8 64-bit. They often could not detect my Wf-fi signal. However my other PC running on Windows 7 32-bit has never encountered this problem. I have used the method suggested by fellow forum member WebWalker. It resolves the problem, but not every time. Sometimes when the above method fails, I have to turn off the laptops, then turn off the wi-fi router, turn the wi-fi router on again. Then only I turn on my laptops and see if they could detect my wi-fi network. It works most of the time.

WPA or WEP?

if WEP:

QUOTE

WEP – Shared Key Authentication has been deprecated and is no longer supported in Windows 8